3/2/2015 12:25 PM PST BY TMZ STAFF

EXCLUSIVE

Dr. Robert Rey didn't just punch the guy who grabbed his balls -- he unleashed the full fury of his 2nd degree black belt ... and says he has no regrets about it.

The former "Dr. 90210" star came on TMZ Live ... and said this wasn't the first time he's been attacked this way -- in fact, he says men in Brazil frequently call him gay and grab his junk, or kiss, or blow in his ear. He says this weekend's incident was just the final straw.

Watch the video ... Dr. Rey breaks down the moves he used to subdue nut-grabber.

3/1/2015 2:35 PM PST BY TMZ STAFF

"Dr. 90210" Robert Rey claims he was assaulted by a drunk dude in Brazil this weekend ... and the guy grabbed him by the nuts so hard the reality star says his testicles are STILL inflamed.

The doctor was dining at a restaurant Saturday in Campina Grande when he claims a man asked him to snap a pic. Rey obliged, but the man groped his crotch out of nowhere ... calling him "Dr. Gay."

Rey, who studies martial arts, says he defended himself by punching the guy twice in the jaw, and then took him down with a kick. His scrap with the guy sparked a drunken brawl between several other people in the restaurant, but Rey stayed out of it.

The reality doc says he didn't call cops and doesn't want to press charges because, "I was young and also did youth nonsense!"

Rey posted a picture of the nut job to prove he was justified in defending his family jewels.

As for Hope's nephew, he and his mother released a statement saying, "It does a disservice to domestic violence victims to suggest that one's physical size is a determinative of whether one is an abuser."

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2/20/2015 12:40 AM PST BY TMZ STAFF

The woman Afromansucker punched during a concert this week is getting ready to strike back ... in court.

TMZ has learned the woman -- a 21-year-old named Haley -- hired an attorney ... who tells us Haley suffered multiple injuries to her neck, jaw and back after the attack.

Her lawyer Tim Holleman also thinks she may have suffered a mild concussion ... since she doesn't remember the punch. Even though our video shows Haley wandering on stage -- Holleman says the venue should bear some responsibility since security did nothing to remove her. Especially since Afroman has a violent history with fans.

Holleman adds ... he's not buying Afroman's claim he didn't know Haley was a woman ... because Afroman saw her when she got on stage -- something the video seems to prove.

Haley's attorney says she's already racked up medical bills, and she'll be seeking reimbursement ... if they go forward with a lawsuit.

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2/19/2015 4:40 PM PST BY TMZ STAFF

When Afroman knocked out that fan on stage, he also KO'd a bunch of his upcoming tour dates -- because some of the venues don't take kindly to violence against women.

The rapper had 7 dates scheduled in the coming weeks, but we've learned 3 venues have already cancelled. One of them ... Ziggy's By the Sea in Wilmington, NC ... tells us they have a very Christian audience that won't tolerate the kinda thing that went down Tuesday night in Biloxi, MS.

We also called Park Street Saloon in Hilliard, OH ... and we're told they cancelled Afroman's show two minutes after seeing the video.

Another venue told us it's still on the fence -- however, 2 others say they're going forward with the scheduled shows.

Afroman actually played Wednesday night in Georgia, and says ... "The venue supported with excellent security and everyone had a great time."

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2/17/2015 4:30 PM PST BY TMZ STAFF

EXCLUSIVE

Cops hauled Afroman off stage, and he knows why -- because he punched a female fan in the face ... instead of getting high -- and the video of the incident is brutal.

The rapper was performing in Biloxi, Mississippi Tuesday night when the woman somehow got on stage and started dancing next to Afroman -- and then suddenly, without warning ... he turned and landed a right-handed haymaker to her face.

He obliterated the woman ... who went down hard -- but Afroman kept on performing. Witnesses say she was bleeding and crying, but somehow she managed to get up on her own.

Cops eventually stopped the show, escorted him off stage, and arrested him outside the venue. He was booked for assault.

Afroman's rep says the rapper had no idea if the fan was a man or a woman -- he just reacted to someone being on stage. The rep claims there was a lack of security at the venue to keep fans off the stage.

The rep added this is totally out of character for Afroman ... who was released late Tuesday after paying a $330 bond.